/*
 * @Author: your name
 * @Date: 2020-12-18 18:08:02
 * @LastEditTime: 2020-12-18 18:08:02
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: /DesignPatterns/行为设计模式/访问者模式.ts
 */
